Use PHP extension XHProf to monitor function-level performance. Reference Official Description of XHProf: XHProfisafunction-levelhierarchicalprofilerforPHPandhasasimpleHTMLbasednavigationalinterface.Ther... "/use PHP extension XHProf for function-level performance monitoring. Reference the official description of XHProf: XHProf is a function-level hierarchical pr
Linux system performance and use of activity monitoring tool-Sysstat
Sysstat is indeed a convenient tool for monitoring system resources, system performance, and usage activities. The sysstat package is used more or less in our daily basic tools. It also provides a tool that
. Nonprofit organization OISF (Open Information Security Foundation) develops and owns its copyrights.Vnstat php– Network traffic monitoringVnstat PHP is a web-based front-end rendering of popular web Tools "Vnstat". Vnstat PHP presents the network usage in a beautiful graphical interface. He can display upload and download traffic in hours, days, months, and output summary reports.nagios– Network/server monitoringNagios is a leading and powerful open
I personally think that a good software engineer must master certain test skills. Some development engineers may think that testing is a test engineer's business, not a development engineer. This development engineer is missing a leg, leaving the test engineer, how do you prove that your program is not a problem.Here are the performance test tools I've collected for the next two days, and if you know other
I personally think that a good software engineer must master certain test skills. Some development engineers may think that testing is a test engineer's business, not a development engineer. This development engineer is missing a leg, leaving the test engineer, how do you prove that your program is not a problem.Here are the performance test tools I've collected for the next two days, and if you know other
We know that system optimization is a complex, tedious, and long-term task. The following are common subsystems for monitoring:CPUMemoryIO
Network
The following are common monitoring tools
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CPU Performance Metrics
1. Ratio of CPU used by user process
2. Ratio of CPU used by system process
3. Wio, waiting for I/O but the CPU is in idle state ratio.
4. CPU Idle Rate
5. CPU Ratio for context exchange
6,nice
7,real-time
8, run the length of the process queue
9, average load
the common tools for monitoring CPU perfo
this dashboard 4). Left green button to add a chart and other tools, first add a chart test General: Basic information of the chart Metrics: The information needed to configure the data source for the chart Axes: Chart x axis y-axis detailed settings, unit settings, alert line settings Display: The specific style of the display 5 ). Specific Configuration 6 ). Configure Refresh Time 7 ). Finally remember to save The final effect
,GETDATE()),0)> -) or(p.blocked 0 andP.waittime/1000.0/60.0 > -) )This leaves only the non-blocking but long-running SQL requests not being monitored. If you must be fully monitored, you can choose to turn on tracing and then analyze the trace file.two . dead LockDeadlock monitoring can be done by monitoring SQL Server errorlog, but you need to turn on the deadlock trace flag in advance. The
Monitor Linux server performance with Munin
Monitoring the performance of LINUX hosts is a complex operation, which depends on command line tools and centralized data. Analysis may be very difficult, and a large amount of data is required to establish a relationship to draw a conclusion. Fortunately, we can use some ex
, OpenBSD, and Solaris. You can download the Iperf Win32 installer on Nlanr, while the Java GUI version (JPERF) can be downloaded from sourceforge.
To measure Wi-Fi performance, you may need to install iperf--This is your test server in the upstream position of the Ethernet host of the Access point (AP) being tested. Next, install iperf--on one or more Wi-Fi notebooks that will be your test client. This is the typical application network between the
of setting method and level, one is by adding –slowms boot parameter configuration. The second is to invoke Db.setprofilinglevel with the second argument:
Db.setprofilinglevel (level, SLOWMS)
2. Query Profiling Records
Unlike MySQL's slow query log, the MongoDB profile record is directly present in the system DB, and the record location is System.profile, so we'll just have to check the collection record to get our profile records. List profile records with execution times longer
All the content in this article is based on JDK 5, which may be different if JDK 6 is used.In the past few days, we have done some performance monitoring work, some of which are worth recording:JDK itself provides many tools based on command lines and guis. It is very useful to learn to apply them rationally.Jmap is a command line program that is used to view the
CentOS7 Performance Monitoring System Installation
Directory
System description.
Development environment.
Before.
Install the influxdb database.
Install collectd
Install Grafana
FAQ
Influxdb web interface does not respond.
System descriptionTo create a beautiful real-time monitoring system like New Relic, we only need the three InfluxDB, collectd, and Grafana
window| Monitoring | Performance of the great blockbusters of course to share with you, upload to your FTP space! Convenient for friends to download and enjoy. But usually these large body "bloated", and FTP space is "limited", over time, very likely to be "bursting" the danger. You certainly do not want this to happen to you, then the remaining number of FTP space moni
libraries that the SDK relies on to your project, which is the following 4 libraries:
Coretelephony.framework
Security.framework
Systemconfiguration.framework
Libz.dylib
When this is done, it's almost complete, just add the following files to the Cloud app in the APPDELEGATE.M file:Then add the following snippet of code to the didfinishlaunchingwithoptions method to complete the app integration.Recompile the project and run the app on the iphone, if the steps above are
System optimization is a complex, complex, and long-term task. The following subsystems are usually monitored: CPU, Memory, IO, Network, etc.
I. CPU performance indicators
CPU utilization: User Time
Context switch: It is associated with the CPU usage. If the CPU usage is in good state, a large number of context switches are acceptable.
Runnable queue: three threads per processor.Monitoring tools
Vmstat
$ V
A disk is usually the slowest subsystem of a computer, and it is also the most prone to performance bottlenecks, because the disk is the farthest from the CPU and the CPU access to the disk involves mechanical operations, such as rotating shafts and track searching. The speed difference between hard disk access and memory access is calculated by an order of magnitude, just like
A disk is usually the slowest subsystem of a computer, and it is also the
There are a lot of performance tools on the Linux platform, a dazzling, long-term groping and experience finding the best thing to use is the proven, simple gadgets. Brendan D. Gregg, a system performance expert, updated his famous talk (Linux performance Tools) and slides o
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